A new and distinct Olea europaea L. olive tree variety named, `GIULIA`, particularly characterized by moderately weak plant vigor; average branch spread; greyed-green bark color (RHS 191A); dark green foliage color (upper side, RHS 193A; lower side, RHS 195C); yellow-green opened flower color (RHS 150D); greyed-green flower bud color (RHS 145C); grey-brown seed (endocarp) color (RHS 199D); dark violet fruit (RHS 83A); self-pollinating variety; adaptation for high altitude rooting (low temperature tolerance) and high density plantations; an early production stage with a medium time of ripening; full mechanical harvesting; and high productivity and high oil yield.